How to Make a Tin Can Telephone

Login | Register

How to Make a Tin Can Telephone

 

Have you ever made a tin can telephone? Oh, you seem to think that cell phones are the best way to talk to your friends, hmm? Well you my friend, are waaaaay wrong!

Before the days of stationary telephones and cellular telephones, kids used to spend hours outdoors communicating with friends via a Tin Can Telephone! Don’t believe me? Try it for yourself:

 

 

How to Make a Tin Can Telephone:

What will You Need?

1. An adult to help

2.Two metal cans, clean and dry (Be sure that there are no sharp edges)

3. Ten to Twelve feet of a piece of small diameter string such as kite string or nylon string

How to Assemble:

1. Make a ‘Tin Can Telephone’ by punching a small hole in the bottom of each can. Each hole should be just large enough so that the string will go through.

2. From the outside, insert one end of the string into the hole in one can. Tie a couple of knots in the end of the string so that it will not slip back through when pulled tight. Do the same with the other end of the string using the other can.

3. With one person holding each can, stretch the string so that it is tight. One person talking into one can sends vibrations through the tightened string to the other can. The person with their ear to the other can will be able to hear what was said.

Seems like quite the thing, huh? How does it work?

When someone speaks or makes a sound, the air ripples or vibrates. The word ‘vibrate’ means to move up and down, or back and forth rapidly. Our ears collect the sound vibration, or sound waves and send them to our brains. Then we hear the sound.

When you pull the string tight and talk into one of the cans of your tin can telephone, the sound vibrates across the taut string to the other can. The person at the other end of the telephone hears your message after his or her ears collect the sound vibrations and send them to the brain to be processed.

It’s like magic! Enjoy talking to your friends the “old-fashioned way”!

*Thanks to DSOKids for these excellent instructions!

Tags: , , , , , , ,
My Top 10 Favourite Campfire Songs for Kids

My Top 10 Favourite Campfire Songs for Kids

 
If you’re looking for a fun list of songs to sing next time you’re with the kids driving in the car, on a hike, bike ride, or camping, …

Read more
The Oldest Fossil on Earth

The Oldest Fossil on Earth

When exciting news hits the Internet, the Campfire Blog jumps into action! Did you hear that just the other day, scientists in Australia made a remarkable discovery:
“A team …

Read more
The ABCs of Outdoor Activities – A to Z

The ABCs of Outdoor Activities – A to Z

Based on reader comments and suggestions, we’ve developed a list of great outdoor activities for kids from A to Z. See the full list here.
The following is the …

Read more
Halloween Safety Tips for Kids

Halloween Safety Tips for Kids

It’s just around the corner! The greatest candy-giving day of the year: Halloween!
But before you dust off your Zombie-Superman costume, the Campfire Blog would like to remind you that …

Read more
Quantum to Cosmos Festival Oct 15 – 25: Be part of it and learn.

Quantum to Cosmos Festival Oct 15 – 25: Be part of it and learn.

I just heard about the most amazing festival that is available live and is also available online for anyone to participate around the world.  It’s being run by the Perimeter …

Read more
12 Days of Christmas- Activity 2: How to Make your own Snow Gauge

12 Days of Christmas- Activity 2: How to Make your own Snow Gauge

We were on Rogers’ Daytime yesterday teaching our good friends Derek and TL how to make your very own snow gauge. Boy, it felt good to be back! In case …

Read more